package com.util;

import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class Md5Util {
	public static String getMd5(String plainText) {
		String re_md5 = new String();
		try {
			MessageDigest md = MessageDigest.getInstance("MD5");
				md.update(plainText.getBytes("UTF-8"));
			byte b[] = md.digest();
			int i;
			StringBuffer buf = new StringBuffer("");
			for (int offset = 0; offset < b.length; offset++) {
				i = b[offset];
				if (i < 0)
					i += 256;
				if (i < 16)
					buf.append("0");
				buf.append(Integer.toHexString(i));
			}

			re_md5 = buf.toString();

		} catch (NoSuchAlgorithmException e) {
			e.printStackTrace();
		} catch (UnsupportedEncodingException e) {
			e.printStackTrace();
		}
		return re_md5;
	}
	
		/*public static void main(String[] args) {
			System.out.println(Md5Util.getMd5("1111"));
			System.out.println(Md5Util.getMd5("2222"));
			System.out.println(Md5Util.getMd5("3333"));
			System.out.println(Md5Util.getMd5("4444"));
			
		}*/
}
